The paper reviews the impact of infrastructures and Information and Communication Technologies (ICT) on economic growth. It takes Spain as a reference case due to the accessibility of capital services estimates. The Spanish database allows the measurement of the impact on growth of three ICT assets (software, hardware and communication) and six different types of infrastructures (roads, railways, airports, ports, as well as urban and water infrastructures).

It also allows the distinction between publicand privately owned infrastructures. As a first step, the paper recommends the adjustment of the National Accounts (NA) figures, especially when the endogenous approach is utilized to compute the usercost. The rationale for the adjustment lies in the need to recognize explicitly the services provided by public capital, not fully included in NA.